Machine for closing cartons



Nov.10,1925. 1,561,103

A. F. NEY I MACHINE FOR CLOSING CARTONS Filed June 29. 1923 2 Sheets-Sheet 1 Ori Nov. 10, 1925. 1,561,103

A. F. NEY

MACHINE FOR CLOSING CARTONS Original Filed June 29. 1923 2 Sheets-Sheet 2 Patented Nov. 16,

UNITE; STATES PATENT IFHQE.

MACHINE FOR CLOSING CAB/IONS.

Original application filed June 29, 1923, Serial No. 648,549. Divided and this application filed. September To all whom it may concern:

Be it known that 1, ANDREW FRANCIS NEY, a subject of the King of Great Britain, residing at East'Kew, in the State of Victoria, Commonwealth of Australia, have invented certain new and useful Improvements in Machines for Closing Cartons, of which the following is a specification, being a division of my application Serial No. 648,549, filed June 29, 1923.

The resent invention refers to machines for closing the top flap pieces of rectangular cartons that have been filled with material such as granular or powdered material, as for instance jelly crystals.

Such cartons usually have either two or four flap pieces and in the latter case in closing the carton a pair of same approach each other and may overlap and are covered by a third flap piece having a central slit into which the end of the remaining or fourth flap, usually formed with a peak or tapered, is inserted. In the case of cartons having only two flaps only'the latter function is necessary.

The present invention usually forms part of a complete packaging or carton filling machine, and is shown as associated with parts of the latter.-

Figure 1 is a plan of the front half of the machine for closing cartons with four flaps.

Fig. 1 is an elevation thereof.

Figure 2 is a longitudinal vertical section on line II-II of Fig. 1.

Figure 3 is a transverse section on line III-III of Figure 1.

Figures 4 and 5 are enlarged sectional views illustrating the last operations of in terlocking the flaps of the cartons.

Figure 6 is a vertical section on line VIVI of Figure 1.

Figure 7 is a view of the closed carton.

The filled cartons C with flaps 17, 18, 19 and 20 are caused to travel intermittingly for instance by means of an endless chain carrier 21 passing around sprockets 4, 5 and provided with bottomless pockets P formed with fiared mouths 2 and sliding along a base B, which pockets contain the filled cartons.

Above the cartons is a fixed narrow over head longitudinal plate 76 mounted-on a bridge fixed to standards 77 and a "horizontally reciprocating finger or folder 7 8, The latter operates in guides on a plate84and Serial No. 739,226.

is pivoted on an arm 79 pivoted on a vertical lever 110 on a rock shaft 83 which latter at its other end has an arm 80 formed with a lateral slot 81 engaged by ap-in 32 on a reciprocating rod or bar 10. This bar is suitably journalled in bearings 11 and provided at one end with a roller 12 engaging a slotted cam 13 on a shaft 14.

As the carton advances the end of plate 76 engages the advance flap 17 and turns it inwardly to an angle approximately degrees to the horizontal, then the folder 78 advances and its end engages the opposite flap 18 and turns it into horizontal posl-tion. When the carton continues, plate 7 6 presses flap 17 down over flap 18 and the other flaps 19 and 20 are engaged respectively by'overhead inclined arms 84, 85 Figure 1, which arms converge and the arm 84 is bent to complete its folding operation before arm 85 functions so that the flap 20 which is formed with a peak is the one overlying the flap with the slit and also the two previously flattened flaps 17 and '18 if there are four flaps on the cartons.

The final operation is the depression of the flap 19 formed with the slit 22 and the peaked flap 20 to finally lock the peak in the slit. This operation is performed by a downwardly bent finger 86, Figures 3, 4 and 5 on an arm 87 pivoted on standard 89 and connected to a vertical rod 88 spring controlled and connected with an approximately horizontal arm 90 having a roller 91 engaging a cam 192 on the shaft 14.

The point of the finger 86 in depressing the slitted flap and the peaked flap moves towards the inner side as in Figures 4 and 5 and in doing so its peak is flipped over the outer edge 112 of the slit 22 and into the latter so that when the finger rises the peak of the flap 2O progresses further into said slit and so securely closes the filled carton. During this action the front and rear sides of the cartons are momentarily pressed outwardly, such movement being permitted by the extra width provided in the pockets by the flared mouth 2 thereof and the release of the finger permits the carton to resume its shape and thereby assist the peak to enter the slit 22.

The carton as shown in Figure 7 then moves a step forward and is pushed through a slot or opening 92, Figure 6, formed in the base plate, by a discharge plunger 98 the shank of which is mounted on a vertically reciprocated spring controlled rod 94 working in a vertical guide '95 and cover plate 139 and connectedby a pin 96 and slot 97 with an arm 98 pivotally mounted on a bracket 99 and provided with a; roller 100 engaging a cam 101 on the main shaft 14. The cartons discharged through slot or opening 92 are delivered into a chute 102 leading to the packers.

It will be understood that when the carton is formed only with two closure flaps, one formed with a peak and the op osite one with a slit, the reciprocating fold the fixed plate 76 are unnecessary.

I claim :v

1 In machines for closing cartons pro-- vided with'flaps} one formed with a Slit and another with a; peak, nitermitting1 travelling carrier provided with carton re:

aning-pockets formed with flared mouths,

means to fold the flapswit t the peaked one overlying the slit one, a pivotdarni formed with ,a downwardly bent finge above the j flaps and meansito reciprocate said arm-1n contact with the flaps whereby the peak of one'fiap inserted i 'i the slit of the other 2. In machines for closin cartonspi ovided with flaps, one formed with a 'slitand another with peak, an i ntermittingly gravy elling carrier provided with carton receiv ng pockets formed with flared m uths. a, pair of converging arms" for folding in the flaps, on

er V 7 8 and oi saidarms arranged to fold the slit flap in advance of the peaked one a pivoted arm formed with a downwardly bent finger-above the: flaps and means to reciprocate said arm in contact with the flaps whereby the peak of pine flap is inserted the slit of theother '3; In machines for closing cartons provided with four flaps, one formed with a slit and the opposite one with a peak, a car- V rier for the cartons, a fixed plate for inwardly folding the advance flap, a reciprocating folder for similarly folrlingtherear- 7 most flap, a pair of converging arms for 1 folding the peaked and slitflaps and a piv one flap in the slit of the slit 7 flared mouths, a fiapflattening' horizontal r flap folder atthe rear of said platen a pair .plate fixed above the carrier, a reciprocating of convergingarms in advance of said plate l I for folding thep eaked and slit fiaps and a pivoted reciprocating arm 7 formed; with a downwardly 'pro ecting finger above said l peakedand slit flaps. f I

Dated this 29th: day of J 11137, 1 924.

ANDREW FRANCIS NEY. 

